Sir W. Arthur Lewis (1915-1991) was a pioneer in the field of economic development and a leading authority on economic growth in developing countries and associated political and social changes. He was a professor at the University of Manchester and Princeton University and served as an advisor to several governments. Lewis, who was from the Caribbean, also broke through racial barriers in the academic world throughout his career. Lewis's papers document his career as a scholar and as an economic advisor and include his professional correspondence, meeting minutes, reports, and writings.